I don't want to be negative, but just want to caution you about the Aragon. I lived with that model for a while and found with very high resolution speakers there was a persistant colouration that irritated me for months, until I took the Aragon out and the music improved. The colouration was almost undiscernible in a brief listen, but taking the Aragon in and out of the system enabled me to isolate it. It is an upper-midrange grain which adds a coolness and wiriness to vocals. Arguably, most solid state amps have similar traits, so I am not dismissing the Aragon. Just warning you that the Aragon is not perfect and moving to higher resolution speakers may be problematic.
